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| Number | Title | Issue Date |
| 7897040 | Washbox Exemplary systems and methods relating to washboxes are described. ... | 03/01/2011 |
| 7892421 | Stationary cloth media filtration and self-aligning backwash assembly The present inventions relate to water and wastewater treatment devices including stationary cloth filter media support structures forming effluent plenums for the filtered influent and self-aligning backwash assemblies for efficient periodic cleaning of the cloth f... | 02/22/2011 |
| 7722760 | Assembly for removing mineral contaminants Filtration of water to provide cleansed water, using an assembly that monitors the volume of water cleansed and back-flushes the filtration media based on that volume. The assembly includes a control valve that monitors the amount of water that has been processed, c... | 05/25/2010 |
| 7608183 | Control valve assembly A control valve assembly (10) controls the flow of water to and from a treatment tank (16) and the regeneration of the treatment material therein. A housing of the valve assembly includes connections for a tank inlet and tank outlet, a inlet chamber ( | 10/27/2009 |
| 7556730 | Reclaimed water reuse device Taught herein is a reclaimed water reuse device, comprising a biological reaction tank, a membrane module, a water pool, an inlet-drainage device, an outlet device, a water-generating device, a first aeration device, a backwash device and a membrane filtering pool, ... | 07/07/2009 |
| 7413649 | Treatment apparatus with modular chemical containing units having one-way valve assemblies A fluid treatment system that includes at least one treatment module (“pod”) with rigid and impermeable inner and outer surfaces, and an annular center passage which is designed to provide an alternative flow path during the pod backwashing process. At least one... | 08/19/2008 |
| 7399419 | Modular filtration system A filter system includes a set of modules, each module including screen assemblies and filter media sandwiched between the screen assemblies. A plurality of control assemblies are associated with each of the modules. Each of the control assemblies is in fluid commun... | 07/15/2008 |
| 7381323 | Filtration apparatus A filtration apparatus is provided which is easy to maintain, manage and which enables preservation of filtration characteristics due to the fact that filtration is carried out by use of a gelatinous filter apparatus. In the filtration apparatus, filtration characte... | 06/03/2008 |
| 7370445 | Sludge removal A sludge removal apparatus includes a sludge removal head (10) with a sludge suction duct and an water supply duct with open end portions alongside each other, and a filter (32) adjacent to the open ends of the suction duct (36) and the water su... | 05/13/2008 |
| 7371266 | Apparatus for cleaning a diesel particulate filter with multiple filtration stages The present invention is directed to a filter cleaning device, in particular, diesel particulate filters. In one embodiment, the device includes a source of high pressure fluid and a mechanism transport the fluid to a nozzle or nozzles; an actuator for moving the no... | 05/13/2008 |
| 7371322 | Filtration system and dynamic fluid separation method A filtration system is provided with filter media operable to remove solids, particulate and colloidal matter from a process fluid. The filtration system may include one or more porous membranes which are anchored or secured on their periphery with a large open work... | 05/13/2008 |
| 7364662 | Scraper adjustment mechanism and method A scraper adjustment mechanism and method for a filter that permits an operator to adjust the distance between the scraper and a filter surface without the need to have access to the filter/scraper interface, or fasteners within the filter. ... | 04/29/2008 |
| 7347933 | Self-cleaning intake screen A self-cleaning screen that automatically cleans both the inside and outside surfaces of the cylindrical screen using only the rotation of the cylindrical screen itself. This self-cleaning ability is accomplished by using a fixed brush on the exterior surface of the... | 03/25/2008 |
| 7341662 | Distribution and collection headers for a filter bed A filtration vessel has an inlet for inflow into the filtration vessel of liquid media to be filtered, a body of filter media in the filtration vessel, and a drain to receive filtered liquid media for take off from the filtration vessel. The inlet is configured to i... | 03/11/2008 |
| 7335312 | Centrifuge with combinations of multiple features A centrifuge with combinations of multiple features is disclosed. In one aspect, a centrifuge for removing more dense material from a fluid medium includes a fluid separation wall placed within a sleeve. The fluid separation wall rotates around the axis of rotation.... | 02/26/2008 |
| 7326351 | Filter underdrain system for backwash flow and method for measuring same A filter underdrain system and a method for measuring the water flow through the underdrain filter system. The apparatus includes panel members assembled to form a perforate grid on the filter base structure of an underdrain block. The panels are generally rectangul... | 02/05/2008 |
| 7320760 | Cleaning efficiency testing method and apparatus for a filter in a filtering system A method and an apparatus are provided for testing the efficiency of a cleaning procedure for a filter in a filtering system. After the cleaning procedure of the filter, the filter pores contain a fluid. The system is pressurized, and a decay in pressure over a pred... | 01/22/2008 |
| 7320750 | Centrifuge with controlled discharge of dense material A centrifuge with controlled discharge of dense materials disclosed. A centrifuge includes a fluid separation wall placed within a sleeve to form a containment zone therebetween. The fluid separation wall aligns and rotates parallel to an axis of rotation. A recepta... | 01/22/2008 |
| 7294274 | Filtration system with enhanced cleaning and dynamic fluid separation A filtration system is provided with filter media operable to remove solids, particulate and colloidal matter from a process fluid. Acoustic, vibration and sonic energy may be used to clean associated filter media to allow substantially continuous filtration of proc... | 11/13/2007 |
| 7293302 | Showerhead holder A showerhead holder is provided for use with an original equipment manufacturer's showerhead connector and cradle to hold the handle of the removable showerhead in a desired position selected by the user. ... | 11/13/2007 |
| 7288197 | Biological membrane filtration system for water treatment and a water treatment process The present invention discloses a biological membrane filtration wastewater treatment system including a porous biological filtration bed zone and a membrane separation zone. The porous biological filtration bed zone has the dual function of providing biological tre... | 10/30/2007 |
| 7288186 | Filtrate immersed activation assembly for disk filters A self cleaning filtration device wherein an activation piston, laterally supported within an activation cylinder is immersed in filtrate within the confines of an immersion chamber. The immersion chamber receives filtrate from a disk filtration stack via orifices a... | 10/30/2007 |
| 7282147 | Cleaning hollow core membrane fibers using vibration A filtration system is provided with hollow membrane filter elements operable to remove solids, particulate and colloidal matter from a process fluid. Acoustic, vibration and ultrasonic energy may be used to clean exterior portions of the hollow membrane filter elem... | 10/16/2007 |
| 7276171 | Method for cleaning separation membrane When an out-of-basin type separation membrane, which is connected to a biological treatment tank through a circulation passageway for filtering tank water, is cleaned, a part or all of the backwash drainage containing the sludge peeled from the membrane surface is r... | 10/02/2007 |
| 7270755 | Liquid filtration method embodying superbuoyant filtration particles Presented is a liquid filtering apparatus and method that overcomes the disadvantages encountered with prior bed filtration systems by providing a filtering apparatus that incorporates a super-buoyant filter medium having a specific gravity very substantially lower ... | 09/18/2007 |
| 7270745 | Liquid filtration apparatus embodying super-buoyant filtration particles Presented is a liquid filtering apparatus and method that overcomes the disadvantages encountered with prior bed filtration systems by providing a filtering apparatus that incorporates a super-buoyant filter medium having a specific gravity very substantially lower ... | 09/18/2007 |
| 7270749 | Pump system A pumping system comprising: (a) an inlet adapted for connection with a supply of low pressure water; (b) a filtration unit in fluid communication with the inlet, wherein the filtration unit filters impurities from the low pressure water so as to discharge a flow of... | 09/18/2007 |
| 7258784 | Solid liquid filtration apparatus and method A method and system for separating a particulate contaminate from a contaminated liquid medium involves filtering the contaminated liquid medium with a filter element having an afflux surface made of plastic particles that are sintered together. The contaminated liq... | 08/21/2007 |
| 7258785 | Apparatus for separating oil and debris from water run-off A method and apparatus for separating oil and debris from urban water run-off, the apparatus being made up of a chamber which is mounted in a storm drain system and has an inner basin with a tilted wire wedge wire screen filter in the path of flow of the run-off, an... | 08/21/2007 |
| 7252761 | Filtration installation for filtering the water of a water pool A filtration installation for a swimming pool (2) comprising a filter vessel (4) containing a filter bed (5), an inlet pipe (6) extending between the pool and the filter vessel, a return pipe (8) extending between the filter vessel... | 08/07/2007 |
| 7250109 | Back-wash filter In the backflush filter (10) according to the invention, in which the flushing back of the filter inserts (15) which are received in several filter chambers takes place by means of flushing filtrate loaded by compressed air, the flush valve (35)... | 07/31/2007 |
| 7237518 | Oil filter for continuous variable valve timing apparatus in engine An oil supply passage of a cylinder head increases design freedom of cylinder heads. The oil filter variously sets the oil supplying position through which oil enters into an oil filter. This improves fuel consumption by simplifying the oil supply passage of the cyl... | 07/03/2007 |
| 7232278 | Adjustable outlet riser An adjustable outlet riser including a riser (54), a reducer (58) sealed to the riser (54), and an adjustable riser (56) having a tight but slidable fit with the reducer (58). A pond for treatment of aqueous solutions has a piping ... | 06/19/2007 |
| 7228910 | Safety mechanism for weight-set downhole tool A safety trip button (12) is described for a weight-set downhole tool. The button operates between the tool body (36) and a sleeve (34) of the tool, locking them initially together. When the tool reaches a selected formation (44) in a wel... | 06/12/2007 |
| 7229560 | Sack-based processes for recovering oil floating on water One or more water- and oil-porous containers or sacks are made of a pair of mesh sheets affixed together and stiffened around their perimeter. The sacks can be partially filled with a multitude of tubular bodies made of an oil-entrapping polymer, which have their lo... | 06/12/2007 |
| 7221495 | Thin film precursor stack for MEMS manufacturing This invention provides a precursor film stack for use in the production of MEMS devices. The precursor film stack comprises a carrier substrate, a first layer formed on the carrier substrate, a second layer of an insulator material formed on the first layer, and a ... | 05/22/2007 |
| 7208084 | Modular aquarium filter A modular aquarium filter includes one or more cartridges connected in series. The cartridges may contain filter media for chemical, biological and/or mechanical filtration. In addition, the cartridges are designed such that they provide a unique internal helical ge... | 04/24/2007 |
| 7204930 | Water purification system and method An oxidation filtration system for cleaning groundwater, the system having an aeration tower and a filtration tank. Within the filtration tank is an upper chamber and a lower chamber. Contained within the lower chamber is a plurality of Styrofoam™ filter media. Se... | 04/17/2007 |
| 7198713 | Installation for the removal and the deactivation of organisms in the ballast water Installation for the removal and the deactivation of organisms in the ballast water, with the following characteristic features: a first feed pump for conveying the ballast water, an equipment for gravity precipita... | 04/03/2007 |
| 7192528 | Self-cleaning filter apparatus A self-cleaning filter system is disclosed that includes an inlet fitting that is adapted to be inserted into an existing filter body. A spray tube having a plurality of outlets that slideably engages the inlet fitting, is positioned in the ring discs of the existin... | 03/20/2007 |
